private async Task <TResult> ExecuteQueryAsync <TQuery, TResult>(TQuery query, IExecutionContext executionContext) where TQuery : IQuery <TResult>
{
if (query == null)
{
return(default(TResult));
}
var cx = await CreateExecutionContextAsync(executionContext);
var handler = _queryHandlerFactory.CreateAsyncHandler <TQuery, TResult>();
if (handler == null)
{
throw new MissingHandlerMappingException(typeof(TQuery));
}
_modelValidationService.Validate(query);
_executePermissionValidationService.Validate(query, handler, cx);
var result = await handler.ExecuteAsync(query, cx);
return(result);
}
